I got one from Ledfoot Racing in California. It is for my 22 inch, three core has dual 10" fans, works great. Don't have a pic but it is just like the posted except for the dual fans.
You can get them from R/T Specialties, they have a web site or you can call them at, (570) 388-1082. I purchased them there in March 2008. They were 5.00 ea., Item # 6015143.